Chai R, et al. - In this retrospective study involving 120 breast cancer patients, researchers evaluated the impact of ascertaining axillary lymph node (ALN) metastasis by breast MRI-derived radiomic signatures and assessed the discerning abilities of different MR sequences. Via the Mann–Whitney U-test, Fisher's exact test, least absolute shrinkage selection operator (LASSO) regression, and receiver operating characteristic analysis, they found the accuracy/AUC of the four sequences was 79%/0.87, 77%/0.85, 74%/0.79, and 79%/0.85 for the T₁WI, second postcontrast phase (CE2), T₂WI, and DWI, respectively. Findings suggested a relationship between breast tumor's radiomic signatures from preoperative breast MRI sequences with the ALN metastasis status, where CE2 phase and the contrast enhancement kinetic features result in the highest classification effect.